Shell for machine-guns



M. A. WALKER.

SHELL FOR MACHINE GUNS.

APPLICATION FILED DEC-3, I919.

Patented May 4, 1920.

' 1 OE SOUTH CONNELLSVILLE, PENNSYLV 1 v SHELL FOR MACH-GUNS.

Specification of Letters ratent.

Patented May 4, 192%;

Application filed December a, 191a. Serial no. 842,075.

To all whom it may concern:

Be it known that I, Marrrmw A. WALKER, a citizen of the United States, residing at South Connellsville, in the county of Fayette and State of Pennsylvania, have invented a to be hen led and transported without the danger of the same explodin A further object of the invention is to provide novel means to guide the firing pin to insure the firing of the shell, when the firing pin contacts with the target at which the same is fired. g

- With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of constructidn hereinafterdescribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without de arting from the spirit of the invention.

eferring to the drawing Fi ure 1 illustrates a ragmental elevationa viewpartly in section of a shell constructed in: accordance with'the present invention; and

Fig. 2 is a sectional view taken on line 2-2'of Fig. 1.

Referring to the drawing in detail, the reference character 5 designates the projectile bod which is of the usual construction, the orward end of which includes a sleeve 8 to accommodate the base 10 ofthe percussion fuse,'formin an important feature of theinvention. includes the base 10 and the hollow body portion 11, the latter being threaded as at 12 to permit the same to be readily secured to the base 10 after-the'explosiv'e' material has been positioned therein, this. 'constr'uc-. tion being necessary to permit. the elements of the percussion cap to be readily assembled. I

An end section 13, which is frusto-conical information, is removably secured to the body portion 11, by means of the threaded extension 14:, cooperating with the threads 15 formed in the upper end. of the body 11.

his percussion fuse Disposed within the member 13, at a point adjacent the base" thereof, is the annulus- 16, which is secured to the inner walls there: ofv 1n any suitable manner, so that the shoulder 17 presented thereb will support the firing pin 18, which is o a conical formation, and ofa diameter slightly less than the interior diameter of the frusto-conical member 13 to permit the same to move freely within the member 13, when the firin pin 18 contacts with the target at whio thesame is fired.

From an observation of the drawing, it

will be seen that the outer end of tho-firing pin 18 extends beyond the end of the member 13 to insure the pin contacting with the object at which the same is fired, to the contact with the cap 20.

This cap 20, is positioned within the upper end of the metallic chamber 21, which embodies comparatively light material, the same being of; a size to closely fit within the body portion 11. to insure against movement thereof with relation to the bod portion, which movement might result in the exploding of the explosive material contained within the metallic ehamber 21, the upper end that the lower extremity 19 thereof will r ing pin in such position under ordinary conditions.

It is the (purpose of the invention to provide a ban capable of supporting the firing pin 18, in its normal position under ordinary conditions and to revent the firing of the shell if the device is dropped, or otherwise caused to contact with a surface, the same being constructed to fire only under unusual pressure directed thereto.

Havin thusdescribed the invention, what is claims is In a projectile, a body portion a hollow body removably secured to the body portion and having a threaded extension providing a shoulder, said hollow body adapted to support high explosive material, and a firing cap, a frusto-conical member having an opening in'cludin inclined walls and having a threaded portion, a shoulder forming a firing pin a pert of the frusto-conical member, said threaded ortion adapted to be positioned on the t readed extension; an annulus clamped between the shoulders, a tapering firing pin supported within the opening in the frusto-conical member and having a shoulder enfagin the annulus and said eptef to be wedged within the opening of the frusto-conical member, when the latter is portion. X

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two witnesses. MATTHEW A. WALKER.

Witnesses:

FRENCH S. DURBT,

' Roam Rmnlmnson.

positioned on the hollow body 10 

